Add selector(optional) to service

service/svc.tf

@@ -1,4 +1,5 @@
 locals {
+  selector = var.selector==null?var.labels:var.selector
   app_slug = "${var.instance}${var.component==""?"":"-"}${var.component}"
   cluster_ports = var.svc_type == "ClusterIP" ? [for idx, target in var.targets : {
     "name"       = target
@@ -35,7 +36,7 @@ locals {
     "ClusterIP" = {
       type     = "ClusterIP"
       ports    = local.cluster_ports
-      selector = var.labels
+      selector = local.selector
     },
     "ExternalName" = {
       type         = "ExternalName"
@@ -44,12 +45,12 @@ locals {
     },
     "NodePort" = {
       type     = "NodePort"
-      selector = var.labels
+      selector = local.selector
       ports    = local.node_ports
     },
     "LoadBalancer" = {
       type     = "LoadBalancer"
-      selector = var.labels
+      selector = local.selector
       ports    = local.lb_ports
       externalTrafficPolicy = var.lb_policy
     }

service/variables.tf

@@ -10,6 +10,10 @@ variable "namespace" {
 variable "labels" {
   type = map(string)
 }
+variable "selector" {
+  type = map(string)
+  default = null
+}
 variable "annotations" {
   type = map(string)
   default = {}